I have excess skin to my abdomen since having twins. I went yesterday for thermage and could see the results instantly.
When I woke up today I was very impressed, the skin is alot tighter. My belly button moved up 1/2 inch and I lost 2 inches off my upper waist.
It was uncomfortable at times, especially near the ribs and pelvic bones, other than that it was not too bad. I do recommend this for someone who wants to tighten loose skin and does not want to pay for a tummy tuck.